Honda CRF250X 2006 Owner's Manual & Competition Handbook page 100

Drive Chain
Drive Chain Sliders
1. Check the chain slider (1) for wear.
If the wear is 3/16 in (5 mm) or more, replace
it.
(1)
(1) chain slider
2. Check the chain guide slider (2) for wear.
Replace the chian guide slider if it is worn to
the bottom of the wear limit groove (3).
(2) (3)
(2) chain guide slider
(3) wear limit groove
96
Servicing Your Honda
Drive Chain Rollers
1. Measure the diameter of the drive chain
rollers (1). Replace them if below the service
limit.
SERVICE LIMIT:
UPPER ROLLER: 1.1 in (29 mm)
LOWER ROLLER: 1.2 in (31 mm)
2. Replace the roller if necessary as follows.
Install the upper drive chain roller (Green) (1)
and lower drive chain roller (Black) (2) as
shown.
Tighten the drive chain roller bolt and nut to
the specified torque.
Upper roller bolt: 9 lbf·ft (12 N·m, 1.2 kgf·m)
Lower roller nut: 9 lbf·ft (12 N·m, 1.2 kgf·m)
(1)
(2)
(1) upper drive chain roller (2) lower drive chain roller
Lubrication
Commercially prepared drive chain lubricants
may be purchased at most motorcycle shops and
should be used in preference to motor oil. Pro
Honda Chain Lube or an equivalent, or SAE 80
or 90 gear oil is recommended.
Saturate each chain joint so that the lubricant
penetrates the space between adjacent surfaces of
the link plates and rollers.